CN110423090A - A kind of cold gap-grouting material of rapid hardening cracking resistance and preparation method thereof for pavement crack repair - Google Patents
A kind of cold gap-grouting material of rapid hardening cracking resistance and preparation method thereof for pavement crack repair Download PDFInfo
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- CN110423090A CN110423090A CN201910764570.0A CN201910764570A CN110423090A CN 110423090 A CN110423090 A CN 110423090A CN 201910764570 A CN201910764570 A CN 201910764570A CN 110423090 A CN110423090 A CN 110423090A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The cold gap-grouting material of rapid hardening cracking resistance and preparation method thereof that the present invention relates to a kind of for pavement crack repair, is mixed by component A and B component.Wherein component A is made of SBR latex modified emulsifying asphalt, defoaming agent, water-reducing agent, early strength agent；B component is made of red mud, self-control curing agent.The present invention can effectively realize the adjustable controllable of gap-grouting material intensity.Simultaneously as the rational proportion of red mud and self-control curing agent, can make gap-grouting material rapid curing after pouring to road cracking, prevent from having inconvenient traffic because caused by solidifying slowly.The flexible compositions such as SBR and pitch can effectively improve the crack resistance at low-temperature of cementation of fissures material, while its cohesive force is strong, and high temperature performance is excellent, long service life, to ensure repair efficiency.On the other hand, the cold gap-grouting material of rapid hardening of the present invention, only needs can will directly to carry out cold-penetration seam processing in work progress after two class component of A, B at the scene simple uniform mixing, convenient and quick construction, and required cementation of fissures equipment is simple and easy to get.
Description
Technical field
The invention belongs to pavement cracks patching material technical fields more particularly to a kind of for pavement crack repair
Cold gap-grouting material of rapid hardening cracking resistance and preparation method thereof.
Background technique
Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill
Art.
With being gradually improved for national highway network structure, the importance of maintenance management is stepped up, and highway in China is also
Curing period is progressed by extensive all-round construction period, the investment in terms of Preventive maintenance for highway also will be increasing.
However it is completed each highway being open to traffic, since cyclically-varying and construction of the repeated action, weather of vehicular load etc. are each
There are various different degrees of early diseases in succession in the influence of kind factor, bituminous pavement.These damage forms of expression be pit slot,
Gather around packet, crack and loose etc., wherein crack is most most common damage types, accounts in pavement disease form about 65% ratio
Example.The type of pavement crack includes transverse joint, longitudinal joint, chicken-wire cracking etc..The presence in crack will be such that road table rainwater penetrates by crack
Roadbase weakens the strength and stability of roadbed significantly, makes bituminous pavement by more serious destruction.Due in some weather
Cold, climate variability, day and night temperature are big, and the crack problem of bituminous pavement is especially prominent.Therefore should as early as possible road pavement crack into
Row closing punishment, to prevent disease from further developing, prolonging service life of pavement.
There are many punishment modes in crack, including micro-surface area, slurry seal, crushed stone sealing, cover, cementation of fissures etc..Research card
Real, it is the most punishment mode of benefit ratio in all preventive maintenance measures that the cementation of fissures, which fills out envelope,.And the quality of gap-grouting material decides
The quality of cementation of fissures effect.Existing gap-grouting material includes heat pitch class (such as 70# heated bitumen, SBS modified pitch), colod-application pitch class
(one pack system cementation of fissures material), proprietary material class (such as sealant), exist or Costco Wholesale are relatively high, service life is short；Or it is applying
The construction equipment using special valuableness is needed during work；Or energy consumption is higher, generation environment pollution endangers a system such as worker's body
Column problem.
Red mud is the pollution waste residue generated in aluminium industry, and the red mud that China generates every year is at 30,000,000 tons or more.
60%~65% essential mineral is aragonite and calcite in red mud.A large amount of red mud land occupation in stacking process, is caused
Environmental pollution.The production method of red mud has two class of red mud from sintering process and Bayer process red mud, wherein main component in red mud from sintering process
For CaO (about 40%), SiO2(about 20%), Fe2O3(about 12%), and main component is SiO in Bayer process red mud2(about 28%),
Fe2O3(about 26%), Al2O3(about 20%).
Has more patent report improving gap-grouting material aspect of performance.For example, patent CN109455981A is disclosed
A kind of cold gap-grouting material of novel pavement and preparation method thereof, by solid mixture (curing agent, aggregate, anti-shrinking medium, toughening anticracking
Agent) and fluid mix (height glutinous emulsified modified asphalt, workability auxiliary agent) be formulated.Patent CN108530913A discloses one
Kind filling cut of asphaltum road surface material, including matrix pitch, rubber powder, red brick powder, ferric oxide powder, bio-oil etc..Patent
CN107936588A discloses a kind of gap-grouting material, including pitch, modifying agent, plasticizer, anti-aging agent, butadiene-styrene rubber powder, virtue
The composition such as hydrocarbon-type oil.Patent CN101935459A discloses a kind of pavement seam filling material, mainly by modified pitch, rubber powder
In increase softening agent, plasticizer, tackifier etc. improve material long-term plasticity.Patent before inventor
CN201811594765.7 discloses a kind of emulsified asphalt compounding red mud-boron mud filling and grouting material and preparation method thereof, the note
It is controllable that pulp material is high with early strength, curing time is short, intensity is adjustable, the good feature with the compatibility on former roadbed and road surface.
But inventor has found: above-mentioned patent is there are still crack resistance at low-temperature, toughness deficiency, and curing rate is slower, and delay is handed over
Logical problem.
Summary of the invention
In order to overcome the above problem, the present invention provides a kind of cold gap-grouting material of rapid hardening for pavement crack repair and its
Preparation method.The present invention is basic component with SBR latex modified emulsifying asphalt, and efficiently use Industrial Solid Waste red mud prepare it is novel
For pavement seam filling repairing the cold gap-grouting material of rapid hardening.This cold gap-grouting material energy conservation and environmental protection has early stage in aspect of performance
Intensity is high, good fluidity, can rapid curing, intensity is adjustable controllable, low temperature performance excellent after solidification, with former roadbed and road after construction
The good feature of the compatibility in face；In terms of construction, there is construction is simple, easy to operate feature can effectively reduce needed for construction
Personnel amount improves efficiency, and reduces pavement seam filling rehabilitation cost, has biggish economic benefit and social benefit.
To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
The cold gap-grouting material of a kind of rapid hardening for pavement crack repair, comprising: component A and B component, wherein component A by
SBR latex modified emulsifying asphalt, defoaming agent, water-reducing agent, early strength agent composition；B component is made of red mud, curing agent；
The curing agent is made of waterglass, calcium hydroxide, caustic soda, portland cement, the plaster of paris；
The mass ratio of the component A and B component is 1:0.8~2.0.
The application research discovery: it can effectively improve the low-temperature cracking-resistance of cementation of fissures material using SBR and pitch synergistic effect
Can, while its cohesive force is strong, repair efficiency is good；And it is added in the curing agent of waterglass, portland cement and the plaster of paris composition
A certain amount of calcium hydroxide and caustic soda can not only accelerate the intensity of red mud, the condensation cure of curing agent, raising gap-grouting material；Also
Can by the cooperation with red mud, solve hot cementation of fissures pitch be easy to soften at high temperature, vehicle roll it is lower deformation occurs and it is thinning,
The problem of accumulating over a long period, cracking again under the effect of expanding with heat and contract with cold.
In some embodiments, the composition of each raw material is as follows in the component A: SBR latex modified emulsifying asphalt 50~80
Part, 1~4 part of defoaming agent, 2~6 parts of water-reducing agent, 1~4 part of early strength agent.Red mud is activated by being added, and effectively controls SBR latex
Ratio between modified emulsifying asphalt and self-control curing agent can effectively realize the adjustable controllable of gap-grouting material intensity.
In some embodiments, the composition of each raw material is as follows in the B component: 40~80 parts of red mud, curing agent 30~60
Part.Because the rational proportion of red mud and self-control curing agent can make gap-grouting material quickly solid after pouring to road cracking
Change, prevents from having inconvenient traffic because caused by solidifying slowly.
In some embodiments, the composition of each raw material is as follows in the curing agent: 10~40 parts of waterglass: calcium hydroxide 0~
30 parts: 5~25 parts of caustic soda: 0~25 part of portland cement: 30~50 parts of the plaster of paris.Under red mud and self-control curing agent effect, solution
Certainly hot cementation of fissures pitch is easy to soften at high temperature, vehicle roll it is lower deformation occurs and it is thinning, accumulate over a long period, make expanding with heat and contract with cold
The problem of being cracked again with lower.
In some embodiments, the SBR latex modified emulsifying asphalt is formulated by the raw material of following parts by weight: pitch
60~80 parts；2~10 parts of cationic surfactant；5-10 parts of SBR emulsion；2~5 parts of acidity regulator, 10~20 parts of water.This
The rapid hardening cold-penetration for pavement crack repair that invention provides stitches in material prescription and preparation process, both containing SBR and pitch etc.
On the one hand flexible composition also can be improved effectively and former roadbed containing red mud and self-control curing agent through sufficient peptizaiton
The synergistic effect of compatibility between road surface, SBR and pitch can effectively improve the crack resistance at low-temperature of cementation of fissures material, while its
Cohesive force is strong, to ensure repair efficiency.
Do not make special restriction in the application to the type of cationic surfactant, it is in some embodiments, described
Cationic surfactant is one of alkyl imidazoline salt, amine salt, quaternary ammonium salt, lignin or a variety of mixing
Object；The cationic surfactant has good balance quality to positive and negative charge, and the SBR latex of preparation can be total with pitch
It is mixed, and effectively improve the performance of pitch.
In some embodiments, the SBR latex is cation type emulsion, and solid content is not less than 60%, the SBR glue of preparation
Newborn modified emulsifying asphalt can effectively improve the crack resistance at low-temperature of cementation of fissures material.
The application does not make special restriction to the specific type of acidity regulator, in some embodiments, the acidity
Regulator is one of hydrochloric acid or acetic acid, is in cationic surfactant within the scope of preferable pH, and it is right to be conducive to cation
The emulsification of pitch.
In some embodiments, the water is common municipal water.
Special restriction is not made in the application to the type of defoaming agent, in some embodiments, the defoaming agent includes
One of mineral oils, polyethers, organic silicon or fatty alcohols or a variety of mixtures, to reduce or eliminate in slurries
Drum, density and mechanical property after improving the solidification of grouting material.
In some embodiments, the water-reducing agent is lignosulfonates, naphthalene sulphonate formaldehyde polymer, Ppolynuclear aromatic
One of salt or polycarboxylic acids or a variety of mixtures.There is peptizaiton to cement granules, its workability can be improved, reduces unit
Water consumption improves the mobility of concrete mix.
In some embodiments, the early strength agent is one of calcium chloride, sodium chloride, aluminium chloride, lithium chloride or a variety of
Mixture.The main function of early strength agent is to accelerate hydrated cementitious speed, promotes the development of early strength of concrete, improve mixed
Solidifying soil early strength.
The present invention also provides a kind of preparation methods of cold gap-grouting material of the rapid hardening for pavement crack repair, comprising:
(1) it prepares SBR latex modified emulsifying asphalt: taking pitch, and pitch heating is maintained to 130~150 DEG C；Take sun from
Sub- surfactant, acidity regulator and water are uniformly mixed and maintain temperature at 60~70 DEG C；Pitch and above-mentioned mixed liquor are existed
5~8min of processing emulsification under colloid mill；SBR latex be uniformly mixed obtaining with cationic emulsified bitumen obtained above
SBR latex modified emulsifying asphalt；
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 20~45 DEG C, defoaming agent, early strength agent is then added
And water-reducing agent, 5~10min is stirred under 300~600rpm, obtains component A；
(3) red mud is taken, it is 260~430m that specific surface area is taken after screening2The red mud powder of/kg, then 2~3h of heat-activated,
It is cooled to room temperature；
(4) water intaking glass, calcium hydroxide, caustic soda, portland cement and the plaster of paris, are uniformly mixed, and curing agent is made；
(5) red mud made from (3) and (4) and curing agent are uniformly mixed, obtain B component；
(6) in the construction process, by component A and B component according to 1:0.8~2.0 weight fraction after mixing
It is directly used in the repairing of pavement crack.
The beneficial effects of the present invention are:
(1) it stitches in material prescription and preparation process, passes through provided by the present invention for the rapid hardening cold-penetration of pavement crack repair
Activation red mud is added, and effectively controls SBR latex modified emulsifying asphalt and makes the ratio between curing agent by oneself, it can be effectively real
Now gap-grouting material intensity is adjustable controllable.Simultaneously as the rational proportion of red mud and self-control curing agent, can make gap-grouting material
The rapid curing after pouring to road cracking prevents from having inconvenient traffic because caused by solidifying slowly.
(2) it stitches in material prescription and preparation process provided by the present invention for the rapid hardening cold-penetration of pavement crack repair, both contained
There are the flexible compositions such as SBR and pitch, it also can on the one hand effectively through sufficient peptizaiton containing red mud and self-control curing agent
Raising and the compatibility between former roadbed and road surface, the synergistic effect of SBR and pitch can effectively improve the low temperature of cementation of fissures material
Cracking resistance, while its cohesive force is strong, to ensure repair efficiency；On the other hand, under red mud and self-control curing agent effect, solution
Certainly hot cementation of fissures pitch is easy to soften at high temperature, vehicle roll it is lower deformation occurs and it is thinning, accumulate over a long period, make expanding with heat and contract with cold
The problem of being cracked again with lower；Environmental suitability is strong, and high temperature performance is excellent, long service life.
(3) the cold gap-grouting material of rapid hardening of the present invention, only needed after preparing component A and B component, in work progress by
Two components can directly carry out cold-penetration seam processing, convenient and quick construction, required cementation of fissures equipment letter after simple uniform mixing at the scene
Singly it is easy to get.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used in this application have logical with the application person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Present disclose provides a kind of cold gap-grouting materials of the rapid hardening for pavement crack repair, by component A and B component according to 1:
0.8~2.0 weight fraction mixes.Wherein component A is strong by SBR latex modified emulsifying asphalt, defoaming agent, water-reducing agent, morning
Agent composition；B component is made of red mud, self-control curing agent.
In one or more embodiments of the embodiment, SBR latex modified emulsifying asphalt is living by pitch, cationic surface
Property agent, SBR emulsion, acidity regulator and water composition.
In one or more embodiments of the embodiment, curing agent is made by oneself by waterglass, calcium hydroxide, caustic soda, ordinary silicon
Whole or a variety of compositions in acid salt cement, the plaster of paris.
In one or more embodiments of the embodiment, in terms of mass fraction, SBR latex modified emulsifying is dripped in component A
Green 50~80 parts, 1~4 part of defoaming agent, 2~6 parts of water-reducing agent, 1~4 part of early strength agent；40~80 parts of red mud, self-control are solid in B component
30~60 parts of agent.
In one or more embodiments of the embodiment, in terms of mass fraction, pitch in SBR latex modified emulsifying asphalt
60~80 parts；2~10 parts of cationic surfactant；5-10 parts of SBR emulsion；2~5 parts of acidity regulator, 10~20 parts of water.
In one or more embodiments of the embodiment, in terms of mass fraction, waterglass in curing agent: niter is made by oneself
Ash: caustic soda: ordinary portland cement: the plaster of paris=10~40 part: 0~30 part: 5~25 part: 0~25 part: 30~50 part.
Self-control curing agent of the present invention can give full play to waterglass, calcium hydroxide, caustic soda, ordinary portland cement and
The advantage of hardening, solidification or the enhancing of the plaster of paris is effectively improved and is adjusted by the proportion adjusted and between red mud, emulsified asphalt
Save the intensity and hardness of cold gap-grouting material.
In one or more embodiments of the embodiment, the pitch is heavy-duty road bitumen A H-30, AH-50, AH-
Any one in 70.
In one or more embodiments of the embodiment, the cationic surfactant be alkyl imidazoline salt,
One of amine salt, quaternary ammonium salt, lignin or a variety of mixtures.
In one or more embodiments of the embodiment, the SBR latex is cation type emulsion, and solid content is not less than
60%；
In one or more embodiments of the embodiment, the acidity regulator is one of hydrochloric acid or acetic acid.
In one or more embodiments of the embodiment, the water is common municipal water.
In one or more embodiments of the embodiment, the defoaming agent includes mineral oils, polyethers, organic silicon
Or one of fatty alcohols or a variety of mixtures.
In one or more embodiments of the embodiment, the water-reducing agent is lignosulfonates, naphthalene sulphonate formaldehyde
One of polymer, Ppolynuclear aromatic salt or polycarboxylic acids or a variety of mixtures.
In one or more embodiments of the embodiment, the early strength agent is calcium chloride, sodium chloride, aluminium chloride, chlorination
One of lithium or a variety of mixtures.
In one or more embodiments of the embodiment, the red mud is one in Bayer process red mud or red mud from sintering process
Kind is a variety of.
The disclosure additionally provides the preparation method of the above-mentioned cold gap-grouting material of the rapid hardening for pavement crack repair, and step is such as
Under:
(1) it prepares SBR latex modified emulsifying asphalt: weighing pitch according to quantity, and pitch heating is maintained to 130~150 DEG C；
Cationic surfactant, acidity regulator, SBR latex and water are weighed according to quantity, are uniformly mixed under agitating mode and maintain temperature
Degree is at 60~70 DEG C；Pitch and above-mentioned mixed liquor are processed into 5~8min of emulsification under colloid mill, wherein the revolving speed setting of colloid mill
For 4000~8000rpm；SBR latex be uniformly mixed with cationic emulsified bitumen obtained above to obtain SBR latex
Modified emulsifying asphalt.
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 20~45 DEG C, the defoaming of corresponding amount is then added
Agent, early strength agent and water-reducing agent stir 5~10min under 300~600rpm, obtain component A.
(3) red mud is weighed according to quantity, and it is 260~430m that specific surface area is taken after screening2The red mud powder of/kg, it is then placed in 400~
2~3h of heat-activated, is cooled to room temperature in 500 DEG C of high temperature furnace.
(4) waterglass, calcium hydroxide, caustic soda, ordinary portland cement and the plaster of paris are weighed according to quantity, and mechanical stirring is uniform, system
Derived from curing agent processed.
(5) red mud made from (3) and (4) and self-control curing agent are uniformly mixed, obtain B component.
(6) in the construction process, after component A and B component being mixed evenly according to the weight fraction of 1:0.8~2.0
It can be directly used for the repairing of pavement crack.
It is illustrated below by way of technical solution of the specific embodiment to the application.
In following embodiment, the cationic surfactant (quaternary ammonium salt) is Cetyltrimethylammonium bromide；
The cationic surfactant (alkyl imidazoline salt) is to praise space board, purchased from the Jinan departure limited public affairs of chemical science and technology
Department；
The cationic surfactant (lignin) is calcium lignosulfonate, is purchased from Guangzhou Zhuo Chang Chemical Co., Ltd.；
The SBR latex is purchased from Guangzhou pine and cypress Chemical Co., Ltd.；
Polyether-type-polyetheramine is polyether antifoam agent GPE, is purchased from Shijiazhuang Cheng Hexin Chemical Co., Ltd.；
The organosilicon is KMT-2033 defoaming agent, is purchased from Foshan City's Corning new material Co., Ltd；
The fatty alcohol is T-2303 fatty alcohol defoaming agent, is purchased from German-Chinese Chemical Industry Science Co., Ltd, Foshan City；
The naphthalene sulphonate formaldehyde polymer is Ai Jin SNF-A, is purchased from Hubei Ai Jin Chemical Co., Ltd.；
The polycarboxylic acids is high performance water reducing agent of polyocarboxy acid, is purchased from additive Co., Ltd, Hebei Huahai；
The red mud is the Bayer process red mud from Shandong Aluminum Co., Ltd.；
Waterglass is potassium water glass, modulus 2.
Embodiment 1:
A kind of preparation method of the cold gap-grouting material of rapid hardening for pavement crack repair, includes the following steps:
(1) heavy-duty road asphalt AH-70 800g is weighed, and pitch heating is maintained to 135 DEG C；Weigh cationic surface
Activating agent (quaternary ammonium salt) 60g, SBR latex 50g, acidity regulator (acetic acid) 40g and water 180g are uniformly mixed under agitating mode
And maintain temperature at 70 DEG C；Pitch and above-mentioned mixed liquor are processed into emulsification 5min under colloid mill, wherein the revolving speed of colloid mill is set
It is set to 8000rpm, SBR latex with cationic emulsified bitumen obtained above be uniformly mixed to obtain SBR latex modified
Emulsified asphalt.
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 30 DEG C, calcium chloride 25g, polyether-type-is then added
Polyetheramine 15g, naphthalene sulphonate formaldehyde polymer 30g, stirs 5min at 500 rpm, obtains component A.
(3) red mud 700g is weighed, takes specific surface area for 360m after crossing 1mm screening2The red mud powder of/kg is then placed in 500 DEG C
High temperature furnace in heat-activated 2h, be cooled to room temperature.
(4) waterglass, calcium hydroxide, caustic soda, ordinary portland cement and the plaster of paris are weighed, mechanical stirring is uniform, is made certainly
Curing agent processed.Weigh waterglass 200g, calcium hydroxide 100g, ordinary portland cement (class 4 2.5) 175g, caustic soda 60g and ripe stone
Cream 300g, stirs evenly in blender, and revolving speed control is in 75rpm to get curing agent.
(5) red mud made from (3) and (4) and self-control curing agent are uniformly mixed, obtain B component.
(6) in the construction process, component A and B component are mixed evenly according to 1:1.2 weight fraction, are directly used in
The repairing of pavement crack.
1 embodiment of table, 1 performance indicator
Embodiment 2:
A kind of preparation method of the cold gap-grouting material of rapid hardening for pavement crack repair, includes the following steps:
(1) heavy-duty road asphalt AH-50 700g is weighed, and pitch heating is maintained to 130 DEG C；Weigh cationic surface
Activating agent (alkyl imidazoline salt) 100, SBR latex 80g, acidity regulator (acetic acid) 50g and water 200g are mixed under agitating mode
It closes uniformly and maintains temperature at 70 DEG C；It pitch and above-mentioned mixed liquor process under colloid mill emulsifies 5min, wherein colloid mill
Revolving speed is set as 4000rpm, SBR latex be uniformly mixed with cationic emulsified bitumen obtained above obtains SBR glue
Newborn modified emulsifying asphalt.
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 20 DEG C, aluminium chloride 10g, organosilicon is then added
10g, lignosulfonates 20g, stirs 5min at 300 rpm, obtains component A.
(3) red mud 650g is weighed, takes specific surface area for 360m after crossing 1mm screening2The red mud powder of/kg is then placed in 500 DEG C
High temperature furnace in heat-activated 2h, be cooled to room temperature.
(4) waterglass, calcium hydroxide, caustic soda, ordinary portland cement and the plaster of paris are weighed, mechanical stirring is uniform, is made certainly
Curing agent processed.Weigh waterglass 100g, calcium hydroxide 0g, caustic soda 50g ordinary portland cement (class 4 2.5) 100g and the plaster of paris
300g is stirred evenly in blender, and revolving speed control is in 75rpm to get curing agent.
(5) red mud made from (3) and (4) and self-control curing agent are uniformly mixed, obtain B component.
(6) in the construction process, component A and B component are mixed evenly according to 1:1.2 weight fraction, are directly used in
The repairing of pavement crack.
2 embodiment of table, 2 performance indicator
Embodiment 3:
A kind of preparation method of the cold gap-grouting material of rapid hardening for pavement crack repair, includes the following steps:
(1) heavy-duty road asphalt AH-30 600g is weighed, and pitch heating is maintained to 150 DEG C；Weigh cationic surface
Activating agent (lignin) 20g, SBR latex 100g, acidity regulator (hydrochloric acid) 20g and water 150g are mixed equal under agitating mode
It is even and maintain temperature at 60 DEG C；Pitch and above-mentioned mixed liquor are processed into emulsification 8min under colloid mill, wherein the revolving speed of colloid mill
It is set as 6000rpm, SBR latex with cationic emulsified bitumen obtained above be uniformly mixed SBR latex is obtained and changes
Property emulsified asphalt.
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 45 DEG C, calcium chloride 40g, fatty alcohol is then added
20g, polycarboxylic acids 60g, stirs 10min at 600 rpm, obtains component A.
(3) red mud 750g is weighed, takes specific surface area for 360m after crossing 1mm screening2The red mud powder of/kg is then placed in 500 DEG C
High temperature furnace in heat-activated 3h, be cooled to room temperature.
(4) waterglass, calcium hydroxide, caustic soda, ordinary portland cement and the plaster of paris are weighed, mechanical stirring is uniform, is made certainly
Curing agent processed.Weigh waterglass 400g, calcium hydroxide 300g, caustic soda 100g ordinary portland cement (class 4 2.5) 250g and ripe stone
Cream 500g, stirs evenly in blender, and revolving speed control is in 100rpm to get curing agent.
(5) red mud made from (3) and (4) and self-control curing agent are uniformly mixed, obtain B component.
(6) in the construction process, component A and B component are mixed evenly according to 1:1.5 weight fraction, are directly used in
The repairing of pavement crack.
3 embodiment of table, 3 performance indicator
Comparative example 1
Common emulsified asphalt is used compared with Example 1, does not use SBR latex modified emulsifying asphalt.
Comparative example 2
Compared with Example 1, calcium hydroxide and caustic soda are added without.
The performance for the bituminous cements that comparative example 1-2 is obtained is as shown in table 4.
4 comparative example performance indicator of table
| Performance indicator | Unit | 1 measured value of comparative example | 2 measured value of comparative example |
| Fluidity | mm | 280 | 278 |
| Presetting period | min | 44 | 90 |
| Final setting time | min | 121 | 190 |
| 7d compression strength | MPa | 13.2 | 5.65 |
| 28d compression strength | MPa | 26.9 | 8.18 |
| Low temperature bonding (5 DEG C) | MPa | 0.2 | 3.2 |
| Low temperature ductility (5 DEG C) | mm | 3 | 12 |
| 60 DEG C of dynamic stabilities | Secondary/mm | 13904 | 7890 |
| Validity period | y | 1 | 1.2 |
By the comparison of table 4 and table 1-3 it is found that gluing the low temperature ductility of gap-grouting material and low temperature without using SBR latex
Knot property declines to a great extent, and low-temperature resistance cracking ability is substantially reduced；Make cementation of fissures material without using waterglass, calcium hydroxide and caustic soda simultaneously
Intensity declines to a great extent, and setting time increases；Therefore the alkali-activated carbonatite effect of waterglass, calcium hydroxide and caustic soda can effectively improve the cementation of fissures
The intensity and curing rate of material.
Finally it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still
It can modify to technical solution documented by previous embodiment, or part is equivalently replaced.It is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.Above-mentioned, although specific embodiments of the present invention have been described, and it is not intended to limit the protection scope of the present invention, institute
Category field technical staff should be understood that based on the technical solutions of the present invention those skilled in the art do not need to pay wound
The various modifications or changes that the property made labour can be made are still within protection scope of the present invention.
Claims (10)
1. a kind of cold gap-grouting material of rapid hardening for pavement crack repair characterized by comprising component A and B component, wherein
Component A is made of SBR latex modified emulsifying asphalt, defoaming agent, water-reducing agent, early strength agent；B component is made of red mud, curing agent；
The curing agent is made of waterglass, calcium hydroxide, caustic soda, portland cement, the plaster of paris；
The mass ratio of the component A and B component is 1:0.8~2.0.
2. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the component A
In each raw material composition it is as follows: it is 50~80 parts of SBR latex modified emulsifying asphalt, 1~4 part of defoaming agent, 2~6 parts of water-reducing agent, early strong
1~4 part of agent.
3. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the B component
In each raw material composition it is as follows: 40~80 parts of red mud, 30~60 parts of curing agent.
4. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the curing agent
In each raw material composition it is as follows: 10~40 parts of waterglass: 0~30 part of calcium hydroxide: 5~25 parts of caustic soda: portland cement 0~25
Part: 30~50 parts of the plaster of paris.
5. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the SBR glue
Newborn modified emulsifying asphalt is formulated by the raw material of following parts by weight: 60~80 parts of pitch；Cationic surfactant 2~10
Part；2~5 parts of acidity regulator, 5-10 parts of SBR latex, 10~20 parts of water.
6. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the cation
Surfactant is one of alkyl imidazoline salt, amine salt, quaternary ammonium salt, lignin or a variety of mixtures；
Or the SBR latex is cation type emulsion, solid content is not less than 60%；
Or the acidity regulator is one of hydrochloric acid or acetic acid；
Or the water is common municipal water.
7. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the defoaming agent
Including one of mineral oils, polyethers, organic silicon or fatty alcohols or a variety of mixtures.
8. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the water-reducing agent
For one of lignosulfonates, naphthalene sulphonate formaldehyde polymer, Ppolynuclear aromatic salt or polycarboxylic acids or a variety of mixtures.
9. being used for the cold gap-grouting material of rapid hardening of pavement crack repair as described in claim 1, which is characterized in that the early strength agent
For one of calcium chloride, sodium chloride, aluminium chloride, lithium chloride or a variety of mixtures.
10. a kind of preparation method of the cold gap-grouting material of rapid hardening for pavement crack repair, it is characterised in that: include:
(1) it prepares SBR latex modified emulsifying asphalt: taking pitch, and pitch heating is maintained to 130~150 DEG C；Take cation form
Face activating agent, acidity regulator and water are uniformly mixed and maintain temperature at 60~70 DEG C；By pitch and above-mentioned mixed liquor in colloid
5~8min of the lower processing emulsification of mill；SBR latex be uniformly mixed with cationic emulsified bitumen obtained above to obtain SBR
Latex modified emulsified asphalt；
(2) SBR latex modified emulsifying asphalt made from (1) is cooled to 20~45 DEG C, defoaming agent, early strength agent is then added and subtracted
Aqua stirs 5~10min under 300~600rpm, obtains component A；
(3) red mud is taken, it is 260~430m that specific surface area is taken after screening2The red mud powder of/kg, then 2~3h of heat-activated, is cooled to
Room temperature；
(4) water intaking glass, calcium hydroxide, caustic soda, portland cement and the plaster of paris, are uniformly mixed, and curing agent is made；
(5) red mud made from (3) and (4) and curing agent are uniformly mixed, obtain B component；
It (6) in the construction process, after mixing can be direct according to the weight fraction of 1:0.8~2.0 by component A and B component
Repairing for pavement crack.
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| CN112479633A (en) * | 2020-12-14 | 2021-03-12 | 保定市牟源公路工程有限公司 | Special adhesive for repairing pavement cracks and preparation method thereof |
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| CN112694304A (en) * | 2020-12-24 | 2021-04-23 | 山东省交通科学研究院 | Cold recycling and old asphalt pavement cold joint adhesive for pavement reconstruction and extension |
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